#643D35#643D35

#643D35 is a dark, muted red. Relative luminance 0.063; OKLCH L 40.4% C 0.057 H 32.2°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#643D35
RGB	rgb(100, 61, 53)
HSL	hsl(10, 31%, 30%)
HSV	hsv(10, 47%, 39%)
CMYK	cmyk(0%, 39%, 47%, 60.8%)
CIE-LAB	lab(30.17, 16.10, 12.10)
CIE-LCH	lch(30.17, 20.14, 36.93°)
OKLab	oklab(40.41% 0.0483 0.0305)
OKLCH	oklch(40.41% 0.057 32.2)
XYZ	xyz(7.5673, 6.3045, 4.1858)
Luminance	0.0630 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D35 #355C64

analogous

#643544 #643D35 #645535

triadic

#643D35 #35643D #3D3564

tetradic

#643D35 #446435 #355C64 #553564

square

#643D35 #446435 #355C64 #553564

split-complementary

#643D35 #356455 #354464

monochromatic

#140C0B #3C2520 #643D35 #8C554A #AE7266

Accessibility & contrast

On white

9.29

#643D35 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#643D35 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D35

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D35	#FFFFFF	#000000	##FFFFFF
##643D35	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#464234

Deuteranopia (green-blind)

#4F4A35

Tritanopia (blue-blind)

#6C373B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #643d35;
/* rgb */ color: rgb(100, 61, 53);
/* oklch */ color: oklch(40.4% 0.057 32.2);

Tailwind

colors: {
  custom: {
    50: '#92736c',
    500: '#643d35',
    950: '#000000',
  },
}

SCSS

$custom: #643d35;
$custom-light: #92736c;
$custom-dark: #000000;

JSON

{
  "hex": "#643d35",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 53
  },
  "hsl": {
    "h": 10.213,
    "s": 30.719,
    "l": 30
  },
  "oklch": {
    "l": 0.40409,
    "c": 0.05708,
    "h": 32.2
  },
  "luminance": 0.06304
}

Semantic roles & 50–950 ramp

primary

#643D35

secondary

#608C95

accent

#B6C761

background

#F9F6F6

surface

#F1ECEB

border

#CBC7C6

text

#0D0807

muted

#7E7B7A

Preview Lab

Preview with #643D35

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →